Manchester City will take on Real Madrid in the Champions League after they were drawn together in Group D.
The two giants of European football will go head to head in the group stages, which kick off next month. They will also take on Ajax and Borussia Dortmund in a difficult group.
Chelsea, who won the tournament in May, face a tough test after being drawn in the same group as Italian giants Juventus, plus Shakhtar Donetsk and Nordsjaelland.
Manchester United will be happy to go up against Braga, Galatasaray and Cluj, while Arsenal will be confident of progressing from a group with Schalke, Olympiakos and Montpellier.
Celtic, however, face daunting matches against Spanish giants Barcelona, as well as games against Spartak Moscow and Benfica.
Paris St Germain
Zenit St Petersburg